How do you get ending 1/4? It's rather easy to figure out ending 2, and endings 3 and 4 are obvious, and most players will get either of them by default.
I have seen the dev's comment on one of the videos that there is a duck somewhere in the level. Have anyone of you found it? It's probably related to the ending somehow.
Also, I'm seriously struggling with hard mode. Been stuck on it for several hours. I would really appreciate any tips/tricks/hints for this one.